Picture frames and boxes require joining two boards to create a right angle. The cleanest way to do that is cutting 45 degree angles at the end of each board, called a miter cut. Here’s the formula to ...

Here's how to do it: We're going to cut the sides of the frame – add 5 cm to the height and width of the art you wish to frame. So, for a 30 x 45 cm photo – we're going to cut a 35 x 50 inch frame.